[INFO] cloning repository https://github.com/AlexisAuriac/google_hash_code_2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlexisAuriac/google_hash_code_2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexisAuriac%2Fgoogle_hash_code_2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexisAuriac%2Fgoogle_hash_code_2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 56dff30608fdabdf1dbc1f3eebc6e596d479c5bb
[INFO] checking AlexisAuriac/google_hash_code_2020 against master#8f21a5c92ea55c348c275a1bc4fedbdf181e0d64 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexisAuriac%2Fgoogle_hash_code_2020" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AlexisAuriac/google_hash_code_2020
[INFO] finished tweaking git repo https://github.com/AlexisAuriac/google_hash_code_2020
[INFO] tweaked toml for git repo https://github.com/AlexisAuriac/google_hash_code_2020 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AlexisAuriac/google_hash_code_2020 on toolchain 8f21a5c92ea55c348c275a1bc4fedbdf181e0d64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AlexisAuriac/google_hash_code_2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 188f78ce94f212ecd1ff499379b2a1d8a50e053660e5b3d8c02dd3931c80e46b
[INFO] running `Command { std: "docker" "start" "-a" "188f78ce94f212ecd1ff499379b2a1d8a50e053660e5b3d8c02dd3931c80e46b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "188f78ce94f212ecd1ff499379b2a1d8a50e053660e5b3d8c02dd3931c80e46b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "188f78ce94f212ecd1ff499379b2a1d8a50e053660e5b3d8c02dd3931c80e46b", kill_on_drop: false }`
[INFO] [stdout] 188f78ce94f212ecd1ff499379b2a1d8a50e053660e5b3d8c02dd3931c80e46b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 030668084fb3f3302b0ed673c7c98f938d6e837845f07c71918ec3babf6f6d3f
[INFO] running `Command { std: "docker" "start" "-a" "030668084fb3f3302b0ed673c7c98f938d6e837845f07c71918ec3babf6f6d3f", kill_on_drop: false }`
[INFO] [stderr]     Checking google_hash_code_2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `nb_books` is never read
[INFO] [stdout]   --> src/orig_state.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct OrigState {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 11 |     pub nb_books: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OrigState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `nb_books` is never read
[INFO] [stdout]   --> src/orig_state.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct OrigState {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 11 |     pub nb_books: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OrigState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "030668084fb3f3302b0ed673c7c98f938d6e837845f07c71918ec3babf6f6d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030668084fb3f3302b0ed673c7c98f938d6e837845f07c71918ec3babf6f6d3f", kill_on_drop: false }`
[INFO] [stdout] 030668084fb3f3302b0ed673c7c98f938d6e837845f07c71918ec3babf6f6d3f
